Massachusetts November 21, 2019 11:40 pm Researchers Focus on Chemical Safety With the dangers surrounding cleaning chemicals at the forefront, researchers are working to make products safer. US & World Videos 2:50 Rally held in Boston in support of Jewish college students 2:35 Fallen Billerica police sergeant honored during vigil 2:09 President of MIT calls for shutting down pro-Palestinian encampments 1:00 Three dead in apparent murder-suicide in Lowell 3:05 100 protesters detained at Northeastern University